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L. l. FARLAND 4AND L. F. ROBEHE.

ROD PACKING.

APPLICATION4 FILED MAY6,1918.

Patented June 24., 19M.

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' non-reclamo.

specification of Leners raient. Patented! yum@ aan? amp,

v dllliplicalicn illcd llla'y d, will. Serial lilo. 232,339.

To 'all whom it may concern." i 1 lle it known that We, Louis J. Farmen and Lome l. Renner, both citizens, of the United States, and both residents of tu Sable Forks, in the county of Essex and State ol New York, have invented Rod- Paclring, of which the following is a lull, clear, and exact description.

Uur invention relates to packing charac tized by the provision ol packingl and packing supporti ng members which alternate and in which the supporting means help to lubricate the pitching.

lin object of the invention is to provide a simple and efiicient packing for rods, whether reciprocating or rotating.

Janother object of the invention is to provide a packing which can be easily and quickly removed and replaced.

With the above and other objects in view, e nature of which will more fully appear as the' description proceeds, the invention consists in the novel construction, combination and arrangement of' parts, as herein fully described, illustrated and claimed.

In the accompanying drawings :forming part oit the application, similar characters of reference indicate corresponding parte in all the views.

Figure l is a vertical longitudinal section through a packing embodying our invention, a portion of the packing being' left gin-elevationg i Fig. 2 is an elevation ofthe helical spring which forms the supportingmeans or' the packing and helps to lubricate the packing, and

lli 3 is an end elevation of the split re,n mova le packing carrier forming the studinpf box, a portion of which is broken out to l show the details of construction. i

Referring to the drawings, llis the cylinder head having an extension 5 for receiving the i stnng box i3 which 1s `formed of semi-cylindrical sections, having a bottom 7 at one end and danges 8 at thebother end. The bottom ci the stuiiinp; box 6 is apertured to lit snugly a rod or shaft 9 which passes into the cyl1n tti,

der. The stung box 6 has its outer diameiter reduced between the ends "to form an oil chamber l0 within the extension 5 into whichV lubricant may besupplied by suitable means ll secnred'to the litlSou 5. To better centralize the stuihng boir-gnide pins 12 are'provided for the sections of the stalling boxu a helical member' lh-,is accommodated within 'the stuiiing box, the cross section of the thread of 4the helical nien'lber being trapo zoidal, the smaller base of which iorms the inner periphery and the larger base the outer periphery. 'llhe helical member 13 has on its outer periphery agroove la. which `facilitates the flow otlnbricant coming from the chamber' l0 into the stuffing boaV through perforations l5 provided in the sections of the stuing box. The helical member has radial perforations 16 which 'convey the oil -from the groove to the innen periphery ot the thread.

Between the thread. ol the helical member 13 a packing member l? is wound onthe-l shaft 9. Due to the fact that the facing sides of the thread diverge toward the axis ot the helical member, the packing member 17 when compressed by the movement of the threads toward one another, will tend to move radially and engage tightly the shai't 9 while the threads of the helical member will be caused by the same movement to move awayfrom the axis and therefore engage tightly the stelling box 6, compression of the helical member and the packing member being controlled by a packing gland lll secured in the weil known way to the extension 5 of the cylinder' head l. The flange-of the scctions of the stalling box (i is preferably provided with. screws 19 for equalizing the strain at the open end of the stalling box. i

The reason for employing a removable stuffingr box formed of semi-cylindrical secpacking, but it is Seli evident that the helical member, and paclrinlar wound. therebetween.,

can be employed as woll in the ordinary stationary type of stuiiinpgboacs.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is;

1. ln a packing of the class described, a helical packing' member, a helical supporting member for said packing member heavingr in cross section the shapcot a trapezoid, the parallel sides ol"- which Iare parallel to the axis of the supporting member, the shorter parallel side of said'trapezoid being nearer to the axis of said supporting member, said helical supporting member having a groove on the larger parallel side ofthe trapezoid, and radial perforations from the groove.

2. In a .packing of the class described, a helical member the coil of which has in cross liti ,Joni

sidee of which are disposed parallel te the exis of the'lielienl member, the smaller pzir- :illel side of which ferme the inner periphery el' the helical member, seid helical member having :i groeve on the outer periphery 'and radiating perforations through the coil,

e asking member bet-Ween the coil of the he ical meixiber, and u stufling box having en eil chamber inits periphery and provided with apertures leading from the ehember through the. Seme.

3. A peeking of the eless described eemprising e, {ienged tubular member, two semieylndrieel sections fitting in the tubular i5 member end having flanges it thfeir ends, the

Leweei. i

sections being reuced between their emits in form with the tubular member mi oil chamber und )rovided with apertures in the reduced portion, :iy helical member having rmlizil el ertures, ai peeking between the veils ef the helical member, :v1 peeking gland extending; info the semi-,Cylindrical seetiims und engaging the peeking, :xml means for edjuslzibly securing the gland bu the tubular member.

LUUS J. FARLAND.

Witnesses a Vinum K.. MOORE, ALviN E. BURT. 

